Finding the Fourth Proportional to 290,391,495.44, 400,286,483.20 and 197,410,578.08
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Solution
The fourth proportional to 290,391,495.44, 400,286,483.20 and 197,410,578.08 is: 272,118,113.95
Step by Step Solution
- Step 1: Write the proportion equation
290,391,495.44 : 400,286,483.20 = 197,410,578.08 : x - Step 2: Convert to fraction form
290,391,495.44/400,286,483.20 = 197,410,578.08/x - Step 3: Cross multiply
290,391,495.44x = 400,286,483.20 × 197,410,578.08 - Step 4: Simplify right side
290,391,495.44x = 79,020,786,046,122,208 - Step 5: Solve for x
x = 79,020,786,046,122,208/290,391,495.44 - Step 6: Final answer
x = 272,118,113.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.